Safety hook



FIG. 1 is a top plan view of a safety hook;

FIG. 2 is a front view thereof;

FIG. 3 is a right side view thereof;

FIG. 4 is a bottom view thereof;

FIG. 5 is a front view thereof;

FIG. 6 is a left side view thereof; and,

FIG. 7 is a perspective view thereof. 

The ornamental design for a safety hook, as shown. 